ABD’s kinematics and compliance measurement machines
measure the quasi-static suspension characteristics that are important to ride
and handling. The machines measure the kinematic characteristics due to
suspension and steering system geometries, and compliances due to suspension
springs, anti-roll bars, elastomeric bushes and component deformation.

The challenge put forward to Heason’s design team was to
develop a compact, zero backlash, precision gear actuator which would allow ABD to
offer higher rotation speeds whilst providing exceptionally smooth motion.
Coupled with this, Heason’s design brief was to package the new actuator to fit
within an existing casting of the SPMM. Working closely with Spinea SA ,
Heason’s mechanical design team developed a compact, zero backlash gear
actuator based around a custom Spinea TwinSpin bearing reducer with an Emoteq
integrated frameless, brushless servo motor and high resolution feedback
device.

The new package achieved a higher speed as well as surpass
the previous ‘zero backlash’ gear system in terms of smoothness, all in a more
compact package.

Actuator performance…

495Nm Continuous Torque

1,237Nm Peak Repeatable Torque

1,000 Nm/Arcmin Tilting Stiffness

110 Nm/Arcmin Torsional Stiffness

< 1.0 Arcmin Maximum Lost Motion

19,200 N Rated Radial Force

27,900 N Maximum Axial Force

Encoder Resolution 1,250,000 Counts/Rev

For further information email sales@heason.com or call us on +44 (0) 1403 792 300